One of the most common questions we get here at Azden pertains to technical issues with a 330 Wireless System. More often than not, these issues are easily resolved by following a simple setup procedure. If you are getting noise or persistent drop-outs when using two transmitters with your 330UPR receiver, there is likely nothing wrong with your system. Just be sure to follow the setup instructions below. Of course if your problems persist after following these setup instructions, you can always contact us and we’ll be happy to help.

When using two transmitters with the 330UPR please follow these important set-up instructions:

Frequency Selection:

Turn on one transmitter (35BT or 35HT or 35XT)

Change the number in the display window until it reads 30 – 01

Turn on the second transmitter (35BT or 35HT or 35XT)

Change the number in the display window until it reads 30 – 17

The first number 30 is considered the GROUP number.
The second numbers 01 and 17 are considered the FREQUENCY numbers.

The transmitters should always be on the same GROUP number, however the FREQUENCY numbers must always be separated by at least 16 spaces. Separating the channels by less than 16 spaces may result in interference.

Now follow the same set-up on the 330UPR receiver.

Turn ON CH1 and CH2.

Change the number in the display window until it reads 30 – 01

Next hit the button on the receiver marked DISP 1/2 (This button allows you to toggle between channel 1 and channel 2)

Change the number in display window until it reads 30 – 17

If it is set-up properly you should be able to hit the DISP 1/2 button repeatedly and the numbers should change back and forth in the display from 30 – 01 to 30 – 17. If so, the frequencies are now set.

If you notice any interference using the above combinations please try different GROUP and FREQUENCY combinations. Such as: 31 – 01 and 31 – 17 or 32 – 01 and 32 – 17. The main point is to use the same GROUP number and always separate the FREQUENCIES by 16 or more spaces.

Proximity Effects:

When using two transmitters make sure they are both at least 8 feet away from the 330UPR. This will prevent frequency overlapping which will result in noise and short working distance. However, both transmitters will operate properly if they are in close proximity to each other.